Systems and methods for characterizing impedance of an energy storage device
US10393818B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 2, 2016 |
| Grant date | Aug 27, 2019 |
| Priority date | — |
| Expiry date | Jun 10, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/007
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for characterizing electrical impedance of an energy storage device includes the following steps: (a) controlling a first switching power converter to transfer electric power between a first energy storage device and a load, (b) controlling the first switching power converter to generate a sinusoidal perturbation on electric current flowing through the first energy storage device, (c) determining an alternating current (AC) component of the electric current flowing through the first energy storage device, (d) determining an AC component of voltage across the first energy storage device, and (e) determining a complex impedance of the first energy storage device based at least in part on the AC component of the electric current flowing through the first energy storage device and the AC component of the voltage across the first energy storage device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.